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Every 10 Years

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Partisan control of congressional redistricting after the 2020 elections, with the number of U.S. House seats each state will receive. (Wikimedia Commons)


Redistricting in the United States is the process of drawing electoral district boundaries. The Uniform Congressional District Act (enacted in 1967) requires that representatives be elected from single-member districts. Six states — Alaska, Delaware, North Dakota, South Dakota, Vermont, and Wyoming — with only one seat each because of their low population do not need redistricting for the House and elect members on a state-wide at-large basis. Redistricting is a contentious political process since the results may determine which political party controls the house of representative.

Read the latest on the status in each state from FiveThirtyEight.